The correct option is DISPERSION OF LIGHT AS IT ENTERS EARTH'S ATMOSPHERE. Scientists use astronomical spectrometer to analyse the composition of the sun and the stars. Astronomical spectrometer works on the basis of dispersion of light as it enters the earth's atmosphere.
Answer:
The velocity of wind with respect to cyclist is
.
Explanation:
speed of cyclist = 12 km/h east
speed of wind = 5 km/h south west
Write the speeds in the vector form

The velocity of wind with respect to cyclist is

Answer:
-55 degrees c
Explanation:
because negative numbers work in reverse and that makes -55 actually lower.
Answer:
1) Weight on Mercury

Explanation:
do the same to the rest and use your calculator to find the weight in N.